スマート構造における圧電アクチュエータ形状と制御系の同時最適設計 : 複数の圧電アクチュエータを有する多入力系における検討(機械力学,計測,自動制御)

概要

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A smart structure is composed of the piezoelectric film sensor and actuator in order to reduce the structural vibration. H_2 controller is designed with the reduced order model of the smart structure which is obtained by finite element and modal analyses. The control force is applied by the piezoelectric film actuator and the feedback signals are detected by the piezoelectric film sensor and the accelerometer in the system. The vibration response is suppressed by the modal control and the displacement control in which the modal coordinate displacement and the spatial displacement are taken as the controlled variable. The shapes of the multiple piezoelectric actuators and the H_2 control system are simultaneously optimized to achieve an enhanced vibration control performance. Efficient optimization algorithm based on a two-step procedure is employed in the simultaneous optimization. It is verified that an enhanced performance on vibration suppression can be achieved by the presented optimal design.
一般社団法人日本機械学会の論文
2003-08-25